Search the web for ford etis and enter your registration or vin where asked.
That will bring up your build data and hopefully help identify the sensor.
Btw, do you have standard air conditioning or climate control? Maybe it's a sensor for climate control?
On the Mk2 focus, ones with climate control have a sensor on the dash which help to balance inside temperature with outside conditions.

I did have a look on Etis but couldnt spot anything as such, i might post it on here to see if any one is more eagle eyed than i am!

I'll have a closer look for any possible sensors hidden in the blackness, I have standard air con so can cross that off the list and i havent noticed them on any other focus's apart from the Titanium upwards!

But yes, it could very well not be wired in, are the covers easy to take off?

But yes, it could very well not be wired in, are the covers easy to take off?

TBH not tried to get the covers off but i would imagine they will just unclip , then you will be able to see if the sensor is wired there are a couple of over people with Zetec's so i wonder if they have a sensor on the screen as well.

Never really figured out what the sensor behind my rear view mirror is on my windscreen.

I dont have auto wipers/lights and the only thing I can locate it too is either the 'Active city stop' or Auto high beam' according to the manual.

Thing is, i cant find these settings on the info/trip computer though...?

Anyone know what it might be for?

Cheers

There's a lot of sensors behind the rear view mirror. My Focus has Lane keeper and a sensor for it (scanning the lane separator line i the middle of the road + on the road shoulder, Active City Stop, and camera that reads traffic signs. Have had a couple of error messages due to dirt on the sensors/cameras. This was solved by a single wiper sweep. The answer to your questions could be multiple, also adding the option that your car is equipped with a sensor pack in the window suited for cars with higher specs and some functions are not available on your car.Regards from Norway